Methods to identify the quality of auto parts are very important when purchasing and installing auto parts. Here are some methods that can help you identify the quality of auto parts:

1. Understand the brand reputation: Buying auto parts from well-known brands can increase the reliability and quality assurance of the product. These brands have been verified in the market for many years and often have a good reputation and customer feedback.

2. Observe the appearance and material quality: Carefully check the appearance and material quality of the purchased auto parts. The materials should be strong and durable, without defects or damage. The appearance should also be neat and tidy, without obvious scratches or fading.

3. Compare with the original parts: Compare the purchased auto parts with the original parts. Pay attention to whether its size, shape and color are consistent with the original parts. If there are any differences, it may be a low-quality or substandard accessory.

4. Pay attention to packaging and labeling: Check whether the packaging and labeling of auto parts are complete and accurate. Formal brands usually provide detailed product information and instructions for use. In addition, through the packaging and labeling, you can also learn the production date and batch of the accessories.

5. Seek professional advice: If you are not sure how to identify the quality of auto parts, it is best to ask professionals for advice. Auto repair shops or experienced car owners can give you advice on auto parts for different brands and models.

6. Check the warranty and after-sales service: Check the warranty policy and after-sales service policy of auto parts. High-quality parts usually provide a certain warranty period and have good after-sales service support. This can provide you with protection in case you encounter problems during use.

7. Refer to user reviews and opinions: Before purchasing auto parts, try to search for relevant user reviews and opinions. User discussions on online forums and social media can help you understand the pros and cons of auto parts of a specific brand or model.

In short, identifying the quality of auto parts requires a comprehensive consideration of multiple factors, including brand reputation, appearance quality, material quality, comparison with original parts, packaging and labeling, professional advice, warranty and after-sales service, and user reviews. Through careful observation and research, you will be able to choose auto parts with reliable quality.